Vulnerability in Budibase Server
CVE-2026-73617
Budibase before 3.40.0 contains a NoSQL injection vulnerability in the MongoDB datasource integration where user-supplied parameters are enriched with handlebars using noEscaping: true and parsed without operator filtering. Attackers can inject MongoDB operators through query parameters to bypass per-user access controls, read arbitrary documents, execute JavaScript via $where operators, or modify collections through update and delete operations.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (25.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 25.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.003 · change: +0.001
Affected products
- Budibase Server — versions 0, 3.40.0
Weakness classification (CWE)
References
- github.com/Budibase/budibase/security/advisories/GHSA-pmpg-2mxq-6xwr (vendor-advisory)
- www.vulncheck.com/advisories/budibase-before-nosql-injection-via-mongodb-dataso… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-73617?
- CVE-2026-73617 is a high-severity vulnerability in Budibase Server, classified under Improper Neutralization of Special Elements in Data Query Logic. CVSS score: 7.1/10. Published 2026-08-13.
- How severe is CVE-2026-73617?
- High severity. CVSS v3 base score is 7.1 out of 10.